<div class="bottom-nav">
    <a href="note-list.html" class="active">
        <span class="icon">🏠</span>
        <span>首页</span>
    </a>
    <a href="messages.html">
        <span class="icon">💬</span>
        <span>消息</span>
    </a>
    <a href="login.html">
        <span class="icon">👤</span>
        <span>个人</span>
    </a>
</div>
<style>
    .bottom-nav {
        position: fixed;
        bottom: 0;
        width: 100%;
        display: flex;
        justify-content: space-around;
        align-items: center;
        background-color: #f8f8f8;
        border-top: 1px solid #ddd;
        padding: 5px 0;
    }
    .bottom-nav a {
        flex: 1;
        text-align: center;
        font-size: 12px;
        color: #666;
        text-decoration: none;
    }
    .bottom-nav a.active {
        color: #007bff;
    }
    .bottom-nav a .icon {
        display: block;
        font-size: 20px;
        margin-bottom: 5px;
    }
</style>
